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Polyester

Polyester is any kind of synthetic material, from nylon stockings and parachutes to bottles to seatbelts in the car. Polyesters are very common in daily life, and they have many uses.

722 Questions

What is the difference between nucleosome and chromatosome?

Histone H1Histone H1 is found in a chromatosome but not in a nucleosome.

Nucleosome with approximately 200bp of DNA and the histone octamer with H1 protein. but in chromatosome, the linher DNA of approximately 45bp is absent.

Why do polyester bed sheets say not to use on ages 3 and under?

In the US, sheets for infants are generally required to be flame retardant. The sheets in question probably aren't, so they're covering themselves legally by saying they're not for use by those under age 3.

What is the difference between polypropylene and polyester?

Polypropylene and polyester are both synthetic fibers, but they differ in their chemical structure and properties. Polypropylene is a thermoplastic polymer known for its lightweight, moisture-wicking capabilities, and resistance to mold and mildew, making it ideal for outdoor and active wear. Polyester, on the other hand, is a more versatile fabric that offers durability, wrinkle resistance, and color retention, commonly used in clothing, upholstery, and industrial applications. Additionally, polyester tends to have better UV resistance compared to polypropylene.

How to make artwork with casting resin?

I am just getting started in casting with Resin and looking up suggestions and ideas before getting started so I am familiar with what I am dealing with.

KM from Virginia

What is the difference between guardian and nominee?

A guardian need not necessarily be a nominee, rather can at best be an appointee when the later is a minor. A guardian can legally be empowered to look after the interests of orphans by the Honorable Court.

Clothing the Table?

Table covers vary from plain colors for a romantic dinner, to bright colors and text for a sporting event or marketplace. Table covers can help display needs for sale pitches, showing logos either on the front of the cover, or on all sides. Or, table covers can bring elegance and beauty to a home. Depending on the event will determine which kind of table cover is right.

Knit polyester is the most popular table cover fabric by far, especially for events like trade shows and exhibits. It’s extremely wrinkle resistant. Any wrinkles that do appear from storage or reckless handling will disappear in a short amount of time once it lays on a table for a while, but it is best to properly roll table covers up so they don’t get wrinkled anyway. Polyester covers are lightweight, but they aren’t flimsy, so they drape nicely over the tables they’re placed upon. These covers can be thrown in a wash cycle like any other colored fabric, as long as washing temperatures don’t exceed 160 degrees and drying temperatures don’t exceed 110 degrees. They can also be ironed as long as the printed logo isn’t ironed.

420 Denier Nylon is a good material for outdoor table covers, because it is durable and strong. Generally, this is the same material used for backpacks and other storage bags. Although it wrinkles easily, care when placing it in storage can minimize the hassle greatly. Water simply beads up and rolls off, so it’s weather and mess resistant as well, able to be wiped easily. To wash this table cover, all that is needed is a washcloth and a little soap. Reinforced vinyl is even stronger than the nylon, and it’s yet another table cover great for outdoor and inclement weather use, needing about the same care as the nylon.

If a table cover is for home decoration, however, something softer is probably necessary. Silk gives a home a gentle touch, good at withstanding different temperatures, and strong enough to protect a table. Other indoor home decoration table covers are cotton, linen, and embroidery. Specific care to each is required to maintain its beauty and durability.

What is the difference between in-proc and out-of-proc?

In-proc - Com object is present within application process
Out-Proc - Com object has it's own process area In-proc - E.g. Activex Dll
Out-Proc - E.g. Activex exe In-proc - Faster
Out-Proc - Comparitively slower In-proc - Useful for local com
Out-Proc - Useful for remote com

Do hydrocarbons cause polyester to degrade?

Yes, hydrocarbons can cause polyester to degrade, particularly through processes such as hydrolysis and oxidation. Hydrocarbons, especially in the presence of heat or UV light, can break down the polymer chains in polyester, leading to a loss of strength and flexibility. Additionally, some hydrocarbons can act as solvents, further facilitating the degradation process. Therefore, exposure to certain hydrocarbons should be minimized to preserve the integrity of polyester materials.

What is the difference between Polyester and polyethylene fiber?

"polyester fiber" consists of individual fibers that are usually at least sever meters, often hundreds of meters, long. In "polyester staple fiber", the fibers have been cut or chopped so that an individual fiber is rarely more than 30 centimeters long.

Are arizona's crew neck shirts that are 59 cotton and 40 polyester pre-shrunk?

According to the Arizona website, the crew necks that are 59% cotton and 40% polyester are pre-shrunk.

Is 600 x 300 denier polyester PVC fabric better than 600 denier polyester PVC fabric?

600 x 300 denier is slightly less quality than 600 x 600. The weave is also different

What is the difference between a 2-bolt main 350 and a 4-bolt main 350. Will a 2-bolt hold 500hp?

2 bolt vs 4 bolt main. A 2 bolt has two bolts holding the main bearing caps on. A 4 bolt has four bolts holding the main bearing caps on. A 2 bolt will not withstand 500 HP for a long period of time. note: 500 HP is an incredible, almost impossible amount of HP to get out of a 350. It can be done but you'll need lots and lots and lots of money.

That is an addon yes 4 bolts is what you need !!! Don't even try with two bolts or it is going to blow. Well I have seen this little baby to hit 560 HP with a 250 Shot of Nitrous but yes it will cost a little more to do that

Nelson Racing Engines has a Small Block Chevy 355 twin turbo, putting out 800 HORSEPOWER. Now this is not an all out race engine, it is part of their daily drivers series, it can be beaten every day of the week, driven to work, abused on the track at the weekends, and survive.

Small block Chevy's are some of the most powerful, and toughest engines on Earth. Rod Saboury is putting out 2,400 horsepower in his 1963 Corvette, with a 427 small block, and yes, a 350 can be bored and stroked to a 427 with major block clearancing for a 4.000"+ crankshaft.

Whats the hang up with a 4 bolt block anyway. I have built many 450-600 HP 2 bolt engines.

In fact the stock 4 bolt setup is been proven to be weaker than the 2 bolt due to where Chevy placed the outer main bolts. They are placed in weakest part of main saddle/block and will stress crack easier.

An ARP studded 2 bolt block would be stronger than a stock 4 bolt.

Plus the caps will break before the # of bolts matter really.

If your looking for the strongest setup then you want a 2 bolt block and have it machined for splayed 4 bolt conversion then use billet splayed caps, with ARP studs

What paint should you use to paint a polyester umbrella?

I would use acrylic since when it dries, it is water resistant. Oil paint might work, but would take longer to dry.

Explain the difference between a saturated and an unsaturated polyester?

the difference is in the backbone... if the backbone is unsaturated then it is an unsaturated polyester, if the backbone is saturated then it is a saturated polyester...

What is the difference between a sedan 111 and a sedan 113?

A 111 is a regular VW Beetle, a 113 is a super beetle (mcpherson struts instead of torsion bar, larger drums on the rear brakes, longer front end etc.)

The prior answer is incorrect;

111 is a 2 door Sedan; Standard Model LHD

113 is a 2 door Sedan; Deluxe Model LHD (Dished steering wheel, shiny trim, etc.)

112 and 114 would be the right-hand drive equivalents

Why polyester is better than cotton?

Depends what your needs are. Polyester dries faster, so for something such as a swim suit, it would be better than cotton, in that respect. The color in polyester also isn't as likely to bleed in wet conditions. So a multi colored item is less likely to get murky in the wash.

What is the micron thickness of 420 denier polyester?

for monofilament filament, the round diameter is about 214 micron

for multi filament yarn depends to cross section of fibers and the rate of twisting

What is a bytecode?

In Java, "bytecode" is the name given to the compiled class files. The "compilation" in this case is not for a specific processor, but rather for a kind of fictional processor - and it is meant to be run by a Java Virtual Machine.

What is the difference between ISO 9000 AND TQM?

ISO 9000

Focus on:

• Certification

• Product conforms to specification

• Audits and check

• Key processes

• Quality system

• External Trust

• Visibility of capability prior to delivery

• Maintenance of what is documented

• An assurance to external customers that a quality system is being pursued.

TQM

Focus on:

• Customer delight and satisfaction

• Total organization including 'invisible' and visible resources

• Total Quality Management

• Internal and External Trust

• Leadership

• Internal Customer

• Human Factor

• Flexibility and change Management

• Top management commitment

• Continuous improvement